bbb bbc bbk bbl bbn bcb bcc bck bcl bcn bkb bkc bkk bkl bkn blb blc blk bll bln bnb bnc bnk bnl bnn c-- cbb cbc cbk cbl cbn ccb ccc cck ccl ccn ckb ckc cl- clb clc clk cll cln cn- cnb cnc cnl cnn kbb kbc kbk kbl kbn kcb kcc kck kcl kcn kkb kkc kkk kkl kkn kl- klb klc kn- knc knk knl knn lbb lbc lbk lbl lcb lcc lck lcl lcn lkb lkl llb llc llk lll lln lnb lnc lnk lnl lnn nbb nbc nbk nbl nbn ncb ncc nck ncl ncn nkc nkk nkn nlb nlc nlk nll nln nnb nnc nnk nnl nnn

bbbb bblb bcbc bccc bccl blkb cbbc cbcc cbcl cbcn cbkl cbkn cblb cblc cbln ccbc ccbn cccb cccc cccl cclc ccnb ccnc ckbc ckck ckcl ckln cknb cknc cnbc cnbl kbbb kbbc kbbk kbbl kbcb kbck kbcl kbkb kbkk kbkl kblb kbll kbnl kbnn kcbc kcbk kcbl kccb kccc kcck kccl kckc kckk kckl kckn kclc kclk kcll kcln kcnb kkbb kkbl kkbn kkcb kkck kkcl kkcn kkkk kklb kklc kkll kkln kknb kknn klbb klbc klbl klbn klcb klcc klck klcl klcn klkc klkk klkl klkn kllb kllc kllk klnc klnn knbb knbc knbn kncb knck kncn knkk knlb knlc knnb knnk lbcc lcbc lccc llcc lllc llll lnnk nbbc nbcc ncbc nccc nccn nclc ncln ncnc nlcc nnnn

ccccc cnnnn lblnc

bbbbbb

bbbbbbb

bbbbbbbb

bbbbbbbbbbbbbbb ccccccccccccccc